摘要
以尼龙6(PA6)为基体材料,以多聚磷酸蜜胺(MPP)/双磷酸哌嗪为复合阻燃剂制备无卤阻燃PA6复合材料。采用扫描电镜观察了无卤阻燃PA6复合材料燃烧物表面的炭层形貌,分析了阻燃剂在PA6中的阻燃机理,研究了MPP用量对无卤阻燃PA6复合材料阻燃性能和流变行为的影响。结果表明:MPP质量分数为10%时,无卤阻燃PA6复合材料的极限氧指数达到33.8%,燃烧热为24.96 k J/g,燃烧后残留物质量保留率为18%。流变研究表明,随着MPP用量增大,无卤阻燃PA6复合材料的表观黏度降低。随着MPP用量增大,促进了燃烧炭层生成,产生了良好的阻燃协同作用。
Halogen-free flame-retardant nylon 6 （PA6） composite was prepared by u- sing PA6 and melamine polyphosphate （MPP） and piperazine diphosphate as composite flame retardant. The carbon layer surface morphology of halogen-free flame-retardant PA6 composite was observed by scanning electron microscope after combustion. The flame re- tarding mechanism of flame retardants in PA6 was also analyzed. The influence of MPP content on flame retardant property, rheological property and thermal decomposition be- havior of halogen-free {lame-retardant PA6 composite was studied. The results showed that limit oxygen index was 33. 8~,and combustion heat was 24. 96 kJ/g,and residue content after combustion was 18%, when MPP mass fraction is 10%. Furthermore, the rheological studies showed that apparent viscosity of halogen-free flame-retardant PA6 composite decreased with MPP content increasing. The surface morphology of halogen- free flame-retardant PA6 composite after combustion showed that carbon layer was formed with the increasing of MPP content, which tends to cooperate with flame retar- ding after combustion.
作者
周健
胡玉
杨菁菁
周仕龙
Zhou Jian Hu Yu Yang Jingjing Zhou Shilong(School of Materials Engineering,Jiangsu University of Technology ,Changzhou,Jiangsu,213001)
出处
《现代塑料加工应用》
北大核心
2017年第5期20-22,共3页
Modern Plastics Processing and Applications
基金
国家自然科学基金(40973046)
关键词
尼龙6
无卤阻燃
极限氧指数
流变行为
炭层
nylon 6
no-halogen flame retardant
limit oxygen index
rheological be- havior
carbon layer layer
